CN109623348B - Transmission assembly production line - Google Patents

Abstract

The invention relates to the technical field of transmission processing, and discloses a transmission assembly production line, which comprises a production line arranged on a platform, a plurality of assembly trolleys for conveying a transmission, a bolt punching device, a flanging device, a blanking mechanism and an electric control cabinet, wherein the assembly trolleys are slidably connected to the production line, and the bolt punching device and the blanking mechanism are respectively positioned on the left side and the right side of the flanging device. The bearing seat bolt can be automatically and quickly screwed up through the bolt-driving device, and the bearing seat locking plate can be turned up through the flanging device, so that the looseness of the bearing seat bolt is prevented, meanwhile, the buffer block can drive the assembly trolley to slowly stop, the assembly trolley can be accurately positioned through the positioning shaft, the production efficiency of the transmission assembly is effectively improved, and the labor cost is reduced.

Description

Transmission assembly production line

Technical field:

the invention relates to the technical field of transmission machining, in particular to a transmission assembly production line.

The background technology is as follows:

the transmission is in the assembly process, the gear shaft needs to be hinged in the bearing hole formed by the box body and the bearing seat through the bearing, the bearing seat is fixed on the box body through the bearing seat bolt, larger torque force is needed when the bearing seat bolt is screwed up, working fatigue is easy to generate in the process of manually screwing up the bolt for a long time, meanwhile, as the working time of the transmission is in a vibrating state, the bearing seat bolt is easy to loosen, a bearing seat locking plate is sleeved on the bearing seat bolt, one side of the bearing seat locking plate is buckled on the bearing seat, and the other side of the bearing seat locking plate is manually folded and pressed against the outer wall of the hexagonal boss of the bearing seat bolt, so that the bearing seat bolt is prevented from directly slipping, but the manual folding locking plate is troublesome, the working efficiency is low, and much labor cost is needed to be input.

The invention comprises the following steps:

the invention aims to overcome the defects of the prior art, and provides a transmission assembly production line which can automatically and quickly screw a bearing seat bolt through a bolt-driving device, can turn a bearing seat locking plate into a flange through a flanging device so as to prevent the looseness of the bearing seat bolt, and meanwhile, can drive an assembly trolley to slowly stop through a buffer block, can accurately position the assembly trolley through a positioning shaft, effectively improves the production efficiency of transmission assembly and reduces the labor cost.

The scheme for solving the technical problems is as follows:

the assembly line comprises a pair of guide rails arranged front and back, a chassis of the assembly trolley is arranged between the two guide rails, each guide rail is provided with a transmission chain for conveying the assembly trolley, each transmission chain is tensioned on two left and right chain wheels, the two right chain wheels are connected with a driving motor, each transmission chain comprises a roller fixed on a roller, and the lower bottom surface of the chassis is pressed against the roller; the device comprises a first rack fixed on a platform, a first cylinder is fixed at the upper end of the front side wall of the first rack, a first lifting seat is fixed on a piston rod of the first cylinder, the first lifting seat is connected to two first sliding rails arranged vertically, the first sliding rails are fixed on the front side wall of the first rack, two second sliding rails and a rodless cylinder which are arranged in the left-right direction are fixed on the first lifting seat, a moving plate is fixed on a sliding block of the rodless cylinder, the moving plate is connected to the two second sliding rails in a sliding manner, a first motor is fixed at the front end and the rear end of the moving plate respectively, a spline shaft is formed at the lower extending end of the moving plate, the spline shaft is inserted into a spline hole at the upper end of the lifting shaft, the lifting shaft is inserted into a guide pipe, the upper end of the guide pipe is fixed on the moving plate, sleeves are fixed on the lower extending ends of the guide pipe, the two sleeves are respectively positioned right and right sides of a bearing seat of a speed changer, two locking plates are respectively arranged on the right side of the bearing seat of the speed changer, and the two bearing seats of the speed changer are respectively, and each locking plate is formed by two locking plates are arranged symmetrically and symmetrically on the left side of the bearing seat of the speed changer, and each locking plate is sleeved with the two locking plates; the front side of the first frame is provided with a second frame, the second frame is arranged at the front side of the assembly line and is fixed on the platform, the upper end of the second frame is hinged with a hinge shaft arranged in the left-right direction, the hinge shaft is inserted and sleeved in the middle of two turning arms, the front ends of the two turning arms are fixed with round rods, the round rods are sleeved with round rings, the round rings are fixed on piston rods of second cylinders, the cylinder bodies of the second cylinders are hinged at the lower ends of the second frame, the rear ends of the two turning arms are fixed with rectangular frames, and a vertical plate of each bearing seat locking plate is arranged between the inner side wall of a bearing seat of the transmission and the outer side wall of the rectangular frame;

the flanging device comprises a third frame fixed on the platform, the upper end of the front side wall of the third frame is fixed with a second lifting seat, the rear side wall of the second lifting seat is inserted and sleeved on a third sliding rail arranged in two vertical directions, the third sliding rail is fixed at the upper end of the front side wall of the third frame, a screw rod which is arranged in parallel with the third sliding rail is hinged on the third frame, the upper end of the screw rod is fixedly connected with a motor shaft of a second motor fixed on the upper side wall of the third frame, the screw rod is in threaded connection with the second lifting seat, two guide rods which are vertically arranged are fixed on the second lifting seat, the guide rods are inserted and sleeved on the upper side wall of the third frame, two fourth sliding rails which are arranged in the front-rear direction are fixed on the lower bottom surface of the second lifting seat, a sliding plate is connected with the rear end of the sliding plate, a connecting arm is fixedly connected with a piston rod of a first oil cylinder fixed on the second lifting seat, the lower bottom surface of the sliding plate is fixedly provided with a base plate through a connecting rod, two sides of the base plate are provided with a pair of left-right symmetrical bending arms, the middle parts of the bending arms are hinged on the base plate, the upper ends of the bending arms are hinged with first idler wheels, the first idler wheels are pressed against the outer wall of a cone frustum, the cone frustum is fixedly arranged at the lower end of a piston rod of a second oil cylinder, the second oil cylinder is fixedly arranged on the lower bottom surface of the sliding plate, the lower ends of the bending arms are fixedly provided with pressing claws, the lower ends of the pressing claws are provided with edge lifting wings, the edge lifting wings of the pressing claws fixedly arranged on the two bending arms are opposite to the inclined plates of two bearing seat locking plates at the front side, the front side of the third frame is provided with a fourth frame, the fourth frame is arranged at the front side of a production line and fixedly arranged on a platform, the upper end of the fourth frame is fixedly provided with two fifth sliding rails arranged in the front-back direction, each fifth sliding rail is sleeved with a balancing arm, the front ends of the two balance arms are fixedly connected through a connecting column, the middle part of the connecting column is in threaded connection with a long screw rod which is arranged in parallel with the fifth sliding rail, two ends of the long screw rod are hinged to a fourth rack, the movement of the long screw rod is fixedly connected with a motor shaft of a third motor, the front end of each balance arm is hinged with a pulley, the outer wall of the upper side of each pulley is pressed against the lower bottom surface of a fixed disc of a corresponding assembly trolley, and the speed changer is fixed on the fixed disc through a bolt; the blanking mechanism comprises a cross beam arranged above the right end of the transmission chain, a hoist block is connected to the cross beam in a sliding manner, a rope capable of lifting is connected to the hoist block, and two hooks are connected to the lower end of the rope; two buffer positioning devices are arranged on the assembly line left and right, the buffer positioning devices on the left side correspond to the bolt-driving devices, and the buffer positioning devices on the right side correspond to the flanging devices; the buffer positioning device comprises a base fixed on a platform, wherein a rectangular hole with an opening at the upper side is formed in the base, a rectangular pipe is sleeved in the rectangular hole, a lifting plate is fixed at the upper end of the rectangular pipe, two lugs arranged front and back are fixed on the upper bottom surface of the lifting plate, a rotating shaft is hinged on the two lugs, the rotating shaft is inserted at the lower end of a buffer block, and the upper end of the buffer block is right opposite to the right side wall of a chassis of the assembly trolley; the rotating shaft is sleeved with a torsion spring, one end of the torsion spring is pressed against the buffer block, the other end of the torsion spring is pressed against the cushion block, the cushion block is fixed on the lifting plate, a limiting block is fixed on the outer wall of the lower end of the buffer block, the limiting block is pressed against the lower bottom surface of the transverse plate of the right-angle baffle, the right-angle baffle is fixed on the lifting plate, a third cylinder is arranged in the rectangular pipe, the cylinder body of the third cylinder is fixed on the base, the piston rod of the third cylinder is fixedly connected with the lifting plate, a notch is formed in the assembly line, and the notch is positioned right above the lifting plate; the buffering positioning device further comprises a fourth cylinder fixedly connected with the assembly line, a lifting frame is fixed at the end part of a piston rod of the fourth cylinder, an upward protruding positioning shaft is fixed at each of four corners of the lifting frame, the positioning shaft is inserted into a corresponding notch on the assembly line, four positioning holes corresponding to the positioning shaft are formed in the chassis, an induction plate is fixed on the chassis and is opposite to a sensor, the sensor is fixed on the assembly line, the sensor is electrically connected with an electric control cabinet, and the electric control cabinet controls the driving motor, the first cylinder, the rodless cylinder, the first motor, the second cylinder, the second motor, the first cylinder, the second cylinder, the third motor, the third cylinder and the fourth cylinder.

The rear side wall of the first frame is fixed with two vertically arranged sixth sliding rails, the two sixth sliding rails are connected with a load block in a sliding mode, the load block is fixed at one end of a pull rope, the other end of the pull rope is fixed on a first lifting seat, the middle of the pull rope is wound around two second rollers arranged front and back, the two second rollers are hinged to the roller seat, and the roller seat is fixed at the top end of the first frame.

The two ropes are respectively arranged at the left end and the right end of the load block.

The outer wall of the upper end of the lifting shaft is provided with an outward flange, the inner wall of the lower end of the guide tube is provided with an inward flange, the lower bottom surface of the outward flange is pressed against the upper side surface of the inward flange, the guide tube is sleeved with a spring, and two ends of the spring are respectively pressed against the upper end surface of the lifting shaft and the moving plate.

The left side wall of the movable plate is pressed against the right end of the first adjusting screw, the first adjusting screw is connected to the first nut in a threaded mode, the first nut is fixed to the left end of the first lifting seat, the right end of the first lifting seat is fixed to the second nut, the second adjusting screw is connected to the second nut in a threaded mode, and the second adjusting screw is located on the right side of the movable plate and faces the right side wall of the movable plate.

The distance between the left end face of the second adjusting screw and the right side wall of the moving plate is equal to the center distance of two bearing seat bolts at the front side of the speed changer.

A third nut is fixed on the front side wall of the first frame, a third adjusting screw rod which is vertically arranged is connected to the third nut in a threaded mode, and the third adjusting screw rod is located below the first frame.

And a starting edge opening is formed in the middle of the starting edge wing.

The stroke length of the first oil cylinder is equal to the center distance of the front bearing seat bolt and the rear bearing seat bolt on the same side of the transmission.

The assembly trolley further comprises a turnover frame fixedly connected with the fixed disc, a first rotating shaft is fixed at the left end of the turnover frame and hinged to a bearing (206) with a seat, the bearing support is fixed at the left end of the chassis, a second rotating shaft coaxially arranged with the first rotating shaft is fixed at the right end of the turnover frame and connected with a driving box, a motor is arranged in the driving box, the driving box is fixed on a driving frame, and the driving frame is fixed at the right end of the chassis.

The invention has the outstanding effects that:

compared with the prior art, it can be automatically screw up the bearing frame bolt fast through beating the bolt device, can carry out the turn-ups with the bearing frame locking plate through flanging device to prevent that the bearing frame bolt is not hard up, simultaneously, it can order about the assembly dolly to stop slowly through the buffer block, can fix a position the assembly dolly through the locating shaft accurately, and it has effectively improved the production efficiency of derailleur assembly, has reduced the cost of labor.

Description of the drawings:

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a partial top view of the present invention;

FIG. 3 is a three-dimensional schematic view of FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 3 about A;

FIG. 5 is an enlarged view of a portion of FIG. 3 with respect to B;

FIG. 6 is a view of FIG. 2 in a direction about C;

FIG. 7 is a schematic view of a drive chain according to the present invention

FIG. 8 is a cross-sectional view of FIG. 2 about E-E;

FIG. 9 is a partial schematic view of the assembly trolley, the cushion positioning device and the transmission of the present invention;

FIG. 10 is a front view (dashed line section shows the pipeline) with respect to FIG. 8;

fig. 11 is a partial enlarged view of fig. 9 about D;

FIG. 12 is a schematic view of the structure of the press claw of the present invention;

fig. 13 is a schematic diagram showing the intermediate process of flanging the locking plate of the pair of bearing locking plates by the pressing claw of the present invention.

The specific embodiment is as follows:

1-13, a transmission assembly production line comprises a production line 1, a plurality of assembly trolleys 2, a bolting device 3, a flanging device 4, a blanking mechanism 5 and an electric control cabinet 6, wherein the assembly trolleys 2, the bolting device 3, the flanging device 4, the blanking mechanism 5 and the electric control cabinet 6 are arranged on a platform, the assembly trolleys 2 are connected to the production line 1 in a sliding mode, the bolting device 3 and the blanking mechanism 5 are respectively positioned on the left side and the right side of the flanging device 4, the production line 1 comprises a pair of guide rails 11 which are arranged in a front-back mode, a chassis 202 of the assembly trolleys 2 is arranged between the two guide rails 11, a transmission chain 12 for conveying the assembly trolleys 2 is arranged on each guide rail 11, each transmission chain 12 is tensioned on two left-right arranged chain wheels 13, the two right-side chain wheels 13 are connected with a driving motor, the transmission chain 12 comprises rollers 121 fixed on the rollers 121, and the lower bottom surface of the chassis 202 is pressed against the rollers 121; the bolting device 3 comprises a first rack 301 fixed on a platform, a first cylinder 302 is fixed at the upper end of the front side wall of the first rack 301, a first lifting seat 303 is fixed on a piston rod of the first cylinder 302, the first lifting seat 303 is connected onto two first sliding rails 304 which are vertically arranged in a sliding manner, the first sliding rails 304 are fixed on the front side wall of the first rack 301, two second sliding rails 305 and a rodless cylinder 306 which are horizontally arranged are fixed on the first lifting seat 303, a moving plate 307 is fixed on a slide block of the rodless cylinder 306, the moving plate 307 is connected onto the two second sliding rails 305 in a sliding manner, a first motor 308 is fixed at the front end and the rear end of the moving plate 307, a motor shaft of the first motor 308 penetrates through a lower extending end of the moving plate 307 to form a spline shaft 3081, the spline shaft 3081 is inserted into a spline hole 3091 at the upper end of the lifting shaft 309, the lifting shaft 309 is inserted into a guide tube 310, the upper end of the guide tube 310 is fixed onto the moving plate 307, the two inclined plate 307 is connected onto bearing blocks 92 which extend out of the bearing blocks 92 and the two bearing blocks 92 are symmetrically arranged at the two sides of the bearing blocks 92, and the two bearing blocks 93 are respectively arranged at the right and left sides of the bearing blocks 92 and the two bearing blocks 93 are symmetrically arranged, and the two bearing blocks 93 are symmetrically arranged at the two sides of the bearing blocks 93 are respectively; the front side of the first rack 301 is provided with a second rack 312, the second rack 312 is arranged at the front side of the assembly line 1 and is fixed on a platform, the upper end of the second rack 312 is hinged with a hinge shaft 313 arranged in the left-right direction, the hinge shaft 313 is inserted in the middle of two turnover arms 314, the front ends of the two turnover arms 314 are fixed with round rods 315, the round rods 315 are sleeved with round rings 317, the round rings 317 are fixed on piston rods of second cylinders 318, the cylinders of the second cylinders 318 are hinged at the lower ends of the second rack 312, the rear ends of the two turnover arms 314 are fixed with rectangular frames 319, and a vertical plate 933 of each bearing seat locking plate 93 is arranged between the inner side wall of a bearing seat 94 of the transmission 9 and the outer side wall of each rectangular frame 319;

the flanging device 4 comprises a third frame 401 fixed on the platform, a second lifting seat 402 is fixed at the upper end of the front side wall of the third frame 401, the rear side wall of the second lifting seat 402 is inserted and sleeved on two third slide rails 403 arranged in the vertical direction, the third slide rails 403 are fixed at the upper end of the front side wall of the third frame 401, a screw 404 arranged in parallel with the third slide rails 403 is hinged on the third frame 401, the upper end of the screw 404 is fixedly connected with a motor shaft of a second motor 405 fixed on the upper side wall of the third frame 401, the screw 404 is in threaded connection with the second lifting seat 402, two guide rods 406 arranged vertically are fixed on the second lifting seat 402, the guide rods 406 are inserted and sleeved on the upper side wall of the third frame 401, two fourth slide rails 407 arranged in the front-rear direction are fixed on the lower bottom surface of the second lifting seat 402, a sliding plate 408 is connected on the two fourth slide rails 407 in a sliding manner, the rear end of the sliding plate 408 is fixedly provided with a connecting arm 409, the connecting arm 409 is fixedly connected with a piston rod of a first oil cylinder 410 fixed on the second lifting seat 402, the lower bottom surface of the sliding plate 408 is fixedly provided with a base plate 412 through a connecting rod 411, two sides of the base plate 412 are provided with a pair of left and right symmetrical bending arms 413, the middle part of the bending arms 413 is hinged on the base plate 412, the upper end of the bending arms 413 is hinged with a first roller 414, the first roller 414 is pressed against the outer wall of a cone table 415, the cone table 415 is fixed at the lower end of a piston rod of a second oil cylinder 416, the second oil cylinder 416 is fixed on the lower bottom surface of the sliding plate 408, the lower end of the bending arms 413 is fixedly provided with a pressing claw 417, the lower end of the pressing claw 417 is provided with a starting wing 4171, the starting wings 4171 of the pressing claw 417 fixed on the two bending arms 413 are opposite to the front side of the two bearing seat locking plates 93, the front side of the third frame 401 is provided with a fourth frame 421, the fourth rack 421 is arranged at the front side of the assembly line 1 and is fixed on a platform, the upper end of the fourth rack 421 is fixedly provided with two fifth sliding rails 418 which are arranged in the front-back direction, each fifth sliding rail 418 is sleeved with a balance arm 419, the front ends of the two balance arms 419 are fixedly connected through a connecting column 420, the middle part of the connecting column 420 is in threaded connection with a long screw 422 which is arranged in parallel with the fifth sliding rail 418, two ends of the long screw 422 are hinged on the fourth rack 421, the movement of the long screw 422 is fixedly connected with a motor shaft of a third motor 424, the front end of each balance arm 419 is hinged with a pulley 423, the outer wall of the upper side of the pulley 423 is pressed against the lower bottom surface of a corresponding fixed disc 201 of one assembly trolley 2, and the transmission 9 is fixed on the fixed disc 201 through bolts; the blanking mechanism 5 comprises a cross beam 51 arranged above the right end of the transmission chain 12, a hoisting block 52 is connected to the cross beam 51 in a sliding manner, a lifting rope 53 is connected to the hoisting block 52, and two hooks 54 are connected to the lower end of the rope 53; two buffer positioning devices 7 are arranged left and right on the assembly line 1, the buffer positioning devices 7 on the left side correspond to the bolt punching device 3, and the buffer positioning devices 7 on the right side correspond to the flanging device 4; the buffering and positioning device 7 comprises a base 701 fixed on a platform, wherein the base 701 is formed with a rectangular hole 7011 with an opening at the upper side, a rectangular pipe 702 is sleeved in the rectangular hole 7011, a lifting plate 703 is fixed at the upper end of the rectangular pipe 702, two lugs 704 arranged front and back are fixed on the upper bottom surface of the lifting plate 703, a rotating shaft 705 is hinged to the two lugs 704, the rotating shaft 705 is inserted at the lower end of a buffering block 706, and the upper end of the buffering block 706 is right opposite to the right side wall of the chassis 202 of the assembly trolley 2; a torsion spring 707 is sleeved on the rotating shaft 705, one end of the torsion spring 707 is pressed against the buffer block 706, the other end of the torsion spring 707 is pressed against the cushion block 708, the cushion block 708 is fixed on the lifting plate 703, a limiting block 709 is fixed on the outer wall of the lower end of the buffer block 706, the limiting block 709 is pressed against the lower bottom surface of the transverse plate of the right-angle baffle 710, the right-angle baffle 710 is fixed on the lifting plate 703, a third cylinder 711 is arranged in the rectangular tube 702, the cylinder body of the third cylinder 711 is fixed on the base 701, the piston rod of the third cylinder 711 is fixedly connected with the lifting plate 703, a notch 101 is arranged on the assembly line 1, and the notch 101 is positioned right above the lifting plate 703; the buffering positioning device 7 further comprises a fourth air cylinder 712 fixedly connected with the assembly line 1, a lifting frame 713 is fixed at the end part of a piston rod of the fourth air cylinder 712, positioning shafts 714 protruding upwards are fixed at four corners of the lifting frame 713 respectively, the positioning shafts 714 are inserted into corresponding notches 102 on the assembly line 1, four positioning holes 2021 corresponding to the positioning shafts 714 are formed in the chassis 202, sensing pieces 715 are fixed on the chassis 202, the sensing pieces 715 are opposite to the sensors 716, the sensors 716 are fixed on the assembly line 1, the sensors 716 are electrically connected with an electric control cabinet 6, the electric control cabinet 6 controls the driving motor, the first motor 308, the second motor 405 and the third motor 424, and the control cabinet 6 controls the third air cylinder 711, the fourth air cylinder 712, the first air cylinder 302, the rodless air cylinder 306, the second air cylinder 318, the first oil cylinder 410 and the second oil cylinder 416 through a plurality of electromagnetic valves respectively.

Furthermore, two sixth sliding rails 320 are fixed on the rear side wall of the first rack 301, a load block 321 is slidably connected to the two sixth sliding rails 320, the load block 321 is fixed at one end of the pull rope 322, the other end of the pull rope 322 is fixed on the first lifting seat 303, the middle part of the pull rope 322 is wound around two front and rear rollers 323, the two second rollers 323 are hinged to the roller seat 324, the roller seat 324 is fixed at the top end of the first rack 301, the load block 321 can reduce the load of the first cylinder 302 when the first lifting seat 303 is pushed and pulled, and the first cylinder 302 can push the first lifting seat 303 with only a small force.

Further, there are two ropes 322, and two ropes 322 are respectively disposed at left and right ends of the weight 321.

Further, the outer wall of the upper end of the lifting shaft 309 is formed with a turned-out edge 3092, the inner wall of the lower end of the guiding tube 310 is formed with an turned-in edge 3101, the lower bottom surface of the turned-out edge 3092 is pressed against the upper side surface of the turned-in edge 3101, the guiding tube 310 is sleeved with a spring 325, and two ends of the spring 325 are respectively pressed against the upper end surface of the lifting shaft 309 and the moving plate 307.

Further, the left side wall of the moving plate 307 is pressed against the right end of the first adjusting screw 326, the first adjusting screw 326 is screwed on the first nut 327, the first nut 327 is fixed on the left end of the first lifting seat 303, the right end of the first lifting seat 303 is fixed with the second nut 328, the second nut 328 is screwed with the second adjusting screw 329, and the second adjusting screw 329 is located on the right side of the moving plate 307 and faces the right side wall of the moving plate 307.

Further, the distance between the left end face of the second adjusting screw 329 and the right side wall of the moving plate 307 is equal to the center distance of the two bearing seat bolts 92 on the front side of the transmission 9.

Further, a third nut 330 is fixed on the front side wall of the first rack 301, a third adjusting screw 331 is vertically disposed on the third nut 330, and the third adjusting screw 331 is located below the first rack 301.

Further, a starting edge notch 4172 is formed in the middle of the starting edge wing 4171.

Further, the stroke length of the first cylinder 410 is equal to the center distance between the front and rear bearing seat bolts 92 on the same side of the transmission 9.

Further, the assembly trolley 2 further comprises a roll-over stand 203 fixedly connected with the fixed disc 201, a first rotating shaft 204 is fixed at the left end of the roll-over stand 203, the first rotating shaft 204 is hinged with a bearing 206 with a seat fixed on a bearing support 205, the bearing support 205 is fixed at the left end of the chassis 202, a second rotating shaft 207 coaxially arranged with the first rotating shaft 204 is fixed at the right end of the roll-over stand 203, the second rotating shaft 207 is connected with a driving box 208, a motor 209 is arranged in the driving box 208, the driving box 208 is fixed on a driving rack 210, and the driving rack 210 is fixed at the right end of the chassis 202.

Working principle: taking the trend of an assembly trolley as an example, firstly, the electric control cabinet 6 controls the driving motor to rotate, the driving motor drives the two chain wheels 13 on the right side to rotate, the two chain wheels drive the two transmission chains 12 to rotate clockwise (in the front view direction), and the rollers 121 on the transmission chains 12 convey the assembly trolley 2 from left to right through friction force with the chassis 202 of the assembly trolley 2; when the sensor 716 of the left buffer positioning device 7 detects the sensing piece 715, the sensor 716 transmits a signal to the electric control cabinet 6, the electric control cabinet 6 controls the piston rod of the third cylinder 711 of the left buffer positioning device 7 to extend, the third cylinder 711 drives the lifting plate 703 to move upwards, the lifting plate 703 drives the buffer block 706 to move upwards through the pair of lugs 704 and the rotating shaft 705, the chassis 202 of the assembly trolley 2 is pressed against the upper end of the buffer block 706, the buffer block 706 can start the buffer effect due to the action of the torsion spring and drive the assembly trolley 2 to stop moving, then the electric control cabinet 6 controls the piston rod of the fourth cylinder 712 of the left buffer positioning device 7 to shrink, the fourth cylinder 712 drives the lifting frame 713 to move upwards, and the lifting frame 713 drives the four positioning shafts 714 to move upwards and insert into the positioning holes 2021 of the chassis 202 of the assembly trolley 2, so that the assembly trolley 2 is positioned, and at the moment, the roller 121 and the bottom surface of the chassis 202 slide; secondly, the electric control cabinet 6 controls the piston rod of the second air cylinder 318 to stretch, the second air cylinder 318 drives the round rod 315 to move upwards through the round ring 317, the round rod 315 drives the turning arm 313 to turn around the hinge shaft 313, the turning arm 313 drives the rectangular frame 319 to be inserted into the transmission 9, the vertical plate 933 of the bearing seat lock plate 93 is just positioned between the inner side wall of the bearing seat 94 and the outer side wall of the rectangular frame 319, thus the situation that the vertical plate 933 is deformed due to overlarge stress when a bolt is tightened next time can be prevented, then the electric control cabinet 6 controls the piston rod of the first air cylinder 302 to stretch, the first air cylinder 302 drives the first lifting seat 303 to move downwards, the first lifting seat 303 drives the two sleeves 311 to move downwards through the moving plate 307, the first motor 308 and the like and is sleeved in two bearing seat bolts on the left side of the transmission 9, at this moment, the lifting shaft 309 is contracted into a certain distance into the guide tube 310, the electric control cabinet 6 controls the two first motor 308 to be opened, the spline shaft 309 is driven by the lifting shaft 309 to rotate, the lifting shaft 309 drives the sleeve 311 to rotate, and then the air cylinder bolts are tightened, and then the first air cylinder 302 is driven by the first motor 302 to shrink the bearing seat 307 to move upwards, the two sleeves 306 are driven by the moving upwards, the two sleeves 307 are driven by the two sleeves 307 to move upwards, and the reset bolts are driven by the reset shafts 303 to move, and the reset shafts are opened, and the reset shafts 303 are moved to move, and the two reset bolts are moved to move 9, and the reset shafts are opened, and the reset bolts are moved, and are moved and are 9 and are moved; thirdly, the electronic control cabinet 6 controls the piston rod of the left third cylinder 711 to shrink, the left buffer block 706 moves downwards, the assembly trolley continues to move rightwards under the action of the transmission chain, when the sensor 716 of the right buffer positioning device 7 detects the sensing piece 715, the sensor 716 transmits a signal to the electronic control cabinet 6, the electronic control cabinet repeatedly moves the right buffer block 706 upwards as mentioned in the second step, the assembly trolley 2 is pressed against the buffer block 706 to stop decelerating, and then the four positioning shafts 714 of the right buffer positioning device 7 move upwards and are inserted into the positioning holes 2021 of the chassis 202 of the assembly trolley 2, so that the assembly trolley 2 is positioned; fourth, the electric control cabinet 6 controls the third motor 424 to be started, the third motor 424 drives the long screw 422 to rotate, the long screw drives the connecting column 420 to move backwards, the connecting arm 420 drives the balance arm 419 to move backwards, the sliding 423 at the end part of the balance arm 419 is inserted into and pressed against the lower bottom surface of the fixed disc 201, so that the fixed disc 201 is in a horizontal state, the electric control cabinet 6 controls the second motor 405 to be started, the second motor 405 drives the screw 404 to rotate, the screw 404 drives the second lifting seat 402 to move downwards, the second lifting seat 402 drives the two pressing claws to move downwards to the outer sides of the two bearing seat locking plates 93 respectively positioned at the front side of the transmission 9, the electric control cabinet 6 controls the piston rods of the second oil cylinders 416 to extend, the second oil cylinders 416 drive the cone platform 415 to move downwards, the first rollers 414 on the two bending arms 413 are driven to move outwards by the cone platform 415, the lower ends of the bending arms 413 are turned inwards under the action of the first rollers 414, the lifting wings 4171 of the pressing claws 417 drive the inclined plates 931 of the bearing seat locking plates 93 to lift, the edge opening 4172 on the edge lifting wing 4171 can be placed on the corner of the hexagonal boss of the bearing seat bolt 92 to face the inclined plate 931 to turn the inclined plate 931 upwards, finally the inclined plate 931 of the bearing seat lock plate 93 is pressed against the outer wall of the hexagonal boss of the bearing seat bolt 92 to prevent the looseness of the bearing seat bolt 92, then the second lifting seat 402 moves upwards, the electronic control cabinet 6 controls the piston rod of the first cylinder 410 to extend, the first cylinder 410 drives the sliding plate 408 to move backwards through the connecting arm 409 to drive the two pressing claws to be located above the two bearing seat lock plates 93 on the rear side of the transmission 9, then the second lifting seat 402 moves downwards to drive the pressing claws 417 to move downwards, the pressing claws 417 turn upwards again to turn the inclined plate 931 of the two bearing seat lock plates 93 on the rear side, the inclined plate 931 of the bearing seat lock plate 93 presses against the outer wall of the hexagonal boss of the bearing seat bolt 92 on the rear side, thereby preventing the rear bearing seat bolt 92 from loosening, and the second elevating seat 402 moves upward to reset; fifth, the piston rod of the third cylinder 711 on the right side of the electric control cabinet 6 is contracted, the buffer block 706 on the right side moves downwards, the assembly trolley continues to move rightwards under the action of the transmission chain, the bolts for fixing the transmission 9 on the fixed disc 201 are removed, then the two hooks 54 are hung and buckled on the transmission 9, and the assembled transmission 9 is lifted out of the assembly line 1 by using the hoist 52.

Finally, the above embodiments are only for illustrating the invention, not for limiting it, and various changes and modifications can be made by one skilled in the relevant art without departing from the spirit and scope of the invention, so that all equivalent technical solutions are also within the scope of the invention, which is defined by the claims.

Claims (8)

1. The utility model provides a derailleur assembly line, including setting up assembly line (1) on the platform, be used for carrying a plurality of assembly trolleys (2) of derailleur (9), beat bolt device (3), flanging device (4), feed mechanism (5) and automatically controlled cabinet (6), assembly trolley (2) sliding connection is on assembly line (1), beats bolt device (3) and feed mechanism (5) and be located the left side and the right side of flanging device (4) respectively, its characterized in that: the assembly line (1) comprises a pair of guide rails (11) which are arranged front and back, a chassis (202) of the assembly trolley (2) is arranged between the two guide rails (11), a transmission chain (12) for conveying the assembly trolley (2) is arranged on each guide rail (11), each transmission chain (12) is tensioned on two left and right chain wheels (13), the two right chain wheels (13) are connected with a driving motor, the transmission chain (12) comprises rollers (121) which are fixed on the rollers, and the lower bottom surface of the chassis (202) is pressed against the rollers (121); the bolt beating device (3) comprises a first rack (301) fixed on a platform, a first cylinder (302) is fixed at the upper end of the front side wall of the first rack (301), a first lifting seat (303) is fixed on a piston rod of the first cylinder (302), the first lifting seat (303) is connected on two vertically arranged first sliding rails (304) in a sliding mode, the first sliding rails (304) are fixed on the front side wall of the first rack (301), two second sliding rails (305) and a rodless cylinder (306) which are arranged in the left-right direction are fixed on the first lifting seat (303), a movable plate (307) is fixed on a sliding block of the rodless cylinder (306), the movable plate (307) is connected on the two second sliding rails (305) in a sliding mode, a first motor (308) is fixed at the front end and the rear end of the movable plate (307), a spline shaft (3081) is formed at the lower extending end of the first motor (308) through the movable plate (307), the spline shaft (3081) is inserted into the upper end of the lifting shaft (309) and a guide tube (309) is inserted into the guide tube (310) and the lower end (310) is fixed on the guide tube (310), the two sleeves (311) are respectively positioned right above two bearing seat bolts (92) on the left side of the speed changer (9), the two bearing seat bolts (92) on the right side of the speed changer (9) are arranged in bilateral symmetry with the two bearing seat bolts (92) on the left side of the speed changer (9), each bearing seat bolt (92) is sleeved with a bearing seat locking plate (93), and each bearing seat locking plate (93) comprises an integrally formed inclined plate (931), a transverse plate (932) and a vertical plate (933) which are arranged at the outer height and the inner height; the front side of the first rack (301) is provided with a second rack (312), the second rack (312) is arranged at the front side of the assembly line (1) and is fixed on a platform, the upper end of the second rack (312) is hinged with a hinge shaft (313) arranged in the left-right direction, the hinge shaft (313) is inserted in the middle of two turnover arms (314), the front ends of the two turnover arms (314) are fixed with round rods (315), the round rods (315) are sleeved with round rings (317), the round rings (317) are fixed on piston rods of second cylinders (318), the cylinder bodies of the second cylinders (318) are hinged at the lower ends of the second rack (312), the rear ends of the two turnover arms (314) are fixed with rectangular frames (319), and a vertical plate (933) of each bearing block (93) is arranged between the inner side wall of a bearing block (94) of the transmission (9) and the outer side wall of each rectangular frame (319);

the flanging device (4) comprises a third frame (401) fixed on the platform, the upper end of the front side wall of the third frame (401) is fixedly provided with a second lifting seat (402), the rear side wall of the second lifting seat (402) is inserted and sleeved on two third slide rails (403) arranged in the vertical direction, the third slide rails (403) are fixedly arranged at the upper end of the front side wall of the third frame (401), a screw (404) which is arranged in parallel with the third slide rails (403) is hinged on the third frame (401), the upper end of the screw (404) is fixedly connected with a motor shaft of a second motor (405) fixed on the upper side wall of the third frame (401), the screw (404) is in threaded connection with the second lifting seat (402), two guide rods (406) which are arranged vertically are fixed on the second lifting seat (402), two fourth slide rails (407) arranged in the front and rear direction are fixed on the lower bottom surface of the second lifting seat (402), two upper slide rails (408) are fixedly connected with a piston rod (408) which is fixedly connected with a piston rod (409) which is fixedly connected with the upper base plate (409) of the second lifting seat (410), a pair of bending arms (413) which are bilaterally symmetrical are arranged on two sides of a base plate (412), the middle parts of the bending arms (413) are hinged on the base plate (412), the upper ends of the bending arms (413) are hinged with first rollers (414), the first rollers (414) are pressed against the outer wall of a conical frustum (415), the conical frustum (415) is fixed at the lower end of a piston rod of a second oil cylinder (416), the second oil cylinder (416) is fixed on the lower bottom surface of a sliding plate (408), pressing claws (417) are fixed at the lower ends of the bending arms (413), edge starting wings (4171) of the pressing claws (417) are formed at the lower ends of the pressing claws (417), the edge starting wings (4171) of the pressing claws (417) fixed on the two bending arms (413) are opposite to inclined plates (93) of two bearing seats (93) at the front side, a fourth frame (421) is arranged at the front side of the third frame (401), the fourth frame (421) is arranged at the front side of the third frame (421), the fourth frame (421) is arranged at the front side of the assembly line (1) and is fixed on the platform, the upper end of the fourth frame (421) is fixed on the lower bottom surface of the sliding plate, pressing claws (418) are fixed at the front ends of the fourth frame (421), the fifth frame (421) and the fifth frame (418) is fixedly connected with the front end of the fifth frame (418) in parallel with the front end of the sliding rail (419), and the fifth frame (418) through the middle part (418) and the front end (418) is fixedly connected with the front sliding rail (419), the two ends of the long screw rod (422) are hinged to the fourth frame (421), one end of the long screw rod (422) is fixedly connected with a motor shaft of the third motor (424), the front end of each balance arm (419) is hinged to a pulley (423), the upper outer wall of each pulley (423) is pressed against the lower bottom surface of a fixed disc (201) of a corresponding assembly trolley (2), and the transmission (9) is fixed on the fixed disc (201) through bolts; the blanking mechanism (5) comprises a cross beam (51) arranged above the right end of the transmission chain (12), a hoist (52) is connected to the cross beam (51) in a sliding manner, a lifting rope (53) is connected to the hoist (52), and two hooks (54) are connected to the lower end of the rope (53); two buffer positioning devices (7) are arranged left and right on the assembly line (1), the buffer positioning devices (7) on the left side correspond to the bolt punching device (3), and the buffer positioning devices (7) on the right side correspond to the flanging device (4); the buffering positioning device (7) comprises a base (701) fixed on a platform, wherein a rectangular hole (7011) with an opening at the upper side is formed in the base (701), a rectangular pipe (702) is sleeved in the rectangular hole (7011), a lifting plate (703) is fixed at the upper end of the rectangular pipe (702), two lugs (704) arranged front and back are fixed on the upper bottom surface of the lifting plate (703), a rotating shaft (705) is hinged to the two lugs (704), the rotating shaft (705) is inserted into the lower end of a buffer block (706), and the upper end of the buffer block (706) is right opposite to the right side wall of a chassis (202) of the assembly trolley (2); a torsion spring (707) is sleeved on the rotating shaft (705), one end of the torsion spring (707) is pressed against the buffer block (706), the other end of the torsion spring (707) is pressed against the cushion block (708), the cushion block (708) is fixed on the lifting plate (703), a limiting block (709) is fixed on the outer wall of the lower end of the buffer block (706), the limiting block (709) is pressed against the lower bottom surface of the transverse plate of the right-angle baffle (710), the right-angle baffle (710) is fixed on the lifting plate (703), a third cylinder (711) is arranged in the rectangular pipe (702), the cylinder body of the third cylinder (711) is fixed on the base (701), the piston rod of the third cylinder (711) is fixedly connected with the lifting plate (703), a notch (101) is formed in the assembly line (1), and the notch (101) is positioned right above the lifting plate (703); the buffering positioning device (7) further comprises a fourth air cylinder (712) fixedly connected with the assembly line (1), a lifting frame (713) is fixed at the end part of a piston rod of the fourth air cylinder (712), a positioning shaft (714) protruding upwards is fixed at each of four corners of the lifting frame (713), the positioning shaft (714) is inserted and sleeved on a corresponding notch (102) on the assembly line (1), four positioning holes (2021) corresponding to the positioning shaft (714) are formed in the chassis (202), an induction sheet (715) is fixed on the chassis (202), the induction sheet (715) is opposite to the sensor (716), the sensor (716) is fixed on the assembly line (1), the sensor (716) is electrically connected with an electric control cabinet (6), and the electric control cabinet (6) controls the driving motor, the first air cylinder (302), the rodless air cylinder (306), the first motor (308), the second air cylinder (318), the second motor (405), the first oil cylinder (410), the second oil cylinder (416), the third motor (424) and the fourth air cylinder (711) respectively;

a starting edge notch (4172) is formed in the middle of the starting edge wing (4171);

the stroke length of the first oil cylinder (410) is equal to the center distance of the front bearing seat bolt (92) and the rear bearing seat bolt (92) on the same side of the transmission (9).

2. A transmission assembly line according to claim 1, wherein: two sixth sliding rails (320) which are vertically arranged are fixed on the rear side wall of the first rack (301), a load block (321) is connected to the two sixth sliding rails (320) in a sliding manner, the load block (321) is fixed at one end of a pull rope (322), the other end of the stay cord (322) is fixed on the first lifting seat (303), the middle part of the stay cord (322) is wound on two second rollers (323) which are arranged front and back, the two second rollers (323) are hinged on the roller seat (324), and the roller seat (324) is fixed at the top end of the first frame (301).

3. A transmission assembly line according to claim 2, wherein: the two pull ropes (322) are arranged at the left end and the right end of the first rack (301) respectively, and the two pull ropes (322) are arranged at the left end and the right end of the first rack respectively.

4. A transmission assembly line according to claim 1, wherein: a turned-out edge (3092) is formed on the outer wall of the upper end of the lifting shaft (309), an inward turned-out edge (3101) is formed on the inner wall of the lower end of the guide tube (310), the lower bottom surface of the turned-out edge (3092) is pressed against the upper side surface of the inward turned-out edge (3101), a spring (325) is sleeved in the guide tube (310), and two ends of the spring (325) are respectively pressed against the upper end surface of the lifting shaft (309) and the moving plate (307).

5. A transmission assembly line according to claim 1, wherein: the left side wall of the movable plate (307) is pressed against the right end of the first adjusting screw (326), the first adjusting screw (326) is connected to the first nut (327) in a screwed mode, the first nut (327) is fixed to the left end of the first lifting seat (303), the second nut (328) is fixed to the right end of the first lifting seat (303), the second adjusting screw (329) is connected to the second nut (328) in a screwed mode, and the second adjusting screw (329) is located on the right side of the movable plate (307) and faces the right side wall of the movable plate (307).

6. A transmission assembly line as defined in claim 5, wherein: the distance between the left end face of the second adjusting screw (329) and the right side wall of the moving plate (307) is equal to the center distance of two bearing seat bolts (92) on the front side of the transmission (9).

7. A transmission assembly line according to claim 1, wherein: a third nut (330) is fixed on the front side wall of the first rack (301), a third adjusting screw (331) which is vertically arranged is connected to the third nut (330) in a threaded mode, and the third adjusting screw (331) is located below the first rack (301).

8. A transmission assembly line according to claim 1, wherein: the assembly trolley (2) further comprises a turnover frame (203) fixedly connected with the fixed disc (201), a first rotating shaft (204) is fixed at the left end of the turnover frame (203), the first rotating shaft (204) is hinged to a bearing (206) with a seat, which is fixed on a bearing support (205), the bearing support (205) is fixed at the left end of the chassis (202), a second rotating shaft (207) which is arranged coaxially with the first rotating shaft (204) is fixed at the right end of the turnover frame (203), the second rotating shaft (207) is connected with a driving box (208), a motor (209) is arranged in the driving box (208), the driving box (208) is fixed on a driving rack (210), and the driving rack (210) is fixed at the right end of the chassis (202).